US4868856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-component flow measurement and imaging
Assignee: BTG International Ltd
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Filing: 1988-12-22
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Granted: 1989-09-19
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Expires: 2008-12-22
Abstract
Abstract A method of measurement of mass flow rates of multicomponent systems comprises directing gamma radiation from a collimated source onto extended scattering means irradiating the flowing medium with single-scattered gamma photons, detecting scattered photons with wide angle photon energy detectors and computing the flow rates from the component velocities and densities.
Inventors
- 👤 Barry Frith
- 👤 Adeboye Olatunbosun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 00:46
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/76; G01F1/86; G01F1/704; G01F1/7042; G01F1/74
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
A method of measurement of mass flow rates and reconstruction of time-averaged cross-sectional distribution of components of a multi-component flow system comprising: directing gamma radiation from a collimated source onto extended scattering means, irradiating substantially the entire flowing medium with single-scattered gamma radiation photons scattered by said scattering means, detecting scattered gamma photons with wide angle photon energy detectors separated by a predetermined distance, determining density and component velocities, computing component mass flow rates from the respective density and velocity and providing an image of flow cross-sectional density distribution.
Claim 2
Independent Claim
89 words
A method of measurement of mass flow rates and reconstruction of time-averaged cross-sectional distribution of components of a multi-component flow system comprising: directing gamma radiation from a collimated source onto extended scattering means, irradiating substantially the entire flowing medium with single-scattered gamma radiation photons scattered by said scattering means, detecting scattered gamma photons with wide angle photon energy detectors separated by a predetermined distance, determining density and component velocities, computing component mass flow rates from the respective density and velocity and providing an image of flow cross-sectional density distribution.
Claim 3
Dependent Claim
46 words
A method of measurement of mass flow rates and reconstruction of time-averaged cross-sectional distribution of the components of a multi-component flow system according to claim 1 characterised in that the source of radiation includes a radionuclide source focussed onto a homogenous low atomic number scattering material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |